DOUBLE BASS
| Vibrating  String Length  | 98-102 cm | 103-105 cm | 106-108 cm | 
| G | 2.40/2.45 mm | 2.30/2.35 mm | 2.25/2.30 mm | 
| D | 3.20/3.25 mm | 3.10/3.15 mm | 3.00/3.05 mm | 
| A | 4.10/4.20 mm | 4.00/4.10 mm | 3.90/4.00 mm | 
| E | 5.50 mm | 5.30 mm | 5.10 mm | 
| contra D | 6.20 mm | 6.00 mm | 5.80 mm | 
| A wound | large | large | medium | 
| E wound | large | large | medium | 
| contra D wound | medium | medium | medium | 
| B/C wound | medium | medium | medium | 
Double bass G plain gut string
Double bass D plain gut string
Double bass A plain gut string
Double bass E plain gut string
Double bass contra D plain gut string
Double bass A wound gut string
Double bass E wound gut string
Double bass contra D wound gut string
Double bass B/C wound gut string